TC WIRING ?
1975 SIX PAC camper. I think the previous owner had issues. Combine that with my inexperience and I have some questions. I see no D.C. wiring plug or wires that look to connect to truck or seperate...
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When I had a Security Traveller from about that vintage, it drove me nuts for awhile until I finally figured out the neutrals were all in the skin. If you have a metal skin, the first place to start is to make sure you have a good ground using your meter on ohms from the truck. Perhaps your unit only has running lights from the truck. You would then use your trailer plug. In those days, interior batteries were often not charged from the truck. Fridges and heaters ran off propane and never used any power. My rig was like that, it sat in front of Caesar's Palace under the marquis for three days at 107F and the fridge kept the milk cold without an single watt of power from the battery in the unit. I did install a 7 pin plug so the battery did get charge from the truck, but the battery only ran the interior lights, nothing else.
